Film cameras
Sears Tower 10, 18m User manual
User manual for Sears Tower 10, 18m. 23 pages in English. Read the original PDF, download or print a copy without registration.
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Document details
- Brand
- Sears
- Model / document
- Sears Tower 10, 18m
- Document type
- User manual
- Language
- English
- Pages
- 23
- File size
- 5.5 MB
- Category
- Film cameras
- Document date
- Not specified in catalog
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Page 1 · Read text
www.butkus.us SEARS, ROEBUCK AND CO., U, S. A. ANO SIMPSONS-SEARS LIMIT=U COPYRIGHT 1957 SEARS. ROEBUCK AND CO. . MADE tN JApANView original page 1
Page 2 · Read text
Now, ot lort, lhe'medium priced 35mm'comero Tower 18, l0 ond 20 oppeored. The world fqmous Olympus Zuiko lens gives you needle-point shorp negolives. The very bright golden luminous finder, fost-hondling, perfectly bolonced, mechonicolly ruperb, this comero belongs omong your most priced potseslions. This instructions shows mosily obout Tower 18. The Tower l0 ond 20 ore exoctly some feotures os Tower l8 excepl difference of the lens ond selftimer. The Tower 20 hos the speciol designed 8 element lens of Olympus H Zuiko lens Fr12 f :35mm the wide picture ongle of 63 degree ond the deep depth of field ore occepted by both of professionol ond omoteur comero mon. iView original page 2
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Venmo @mike-butkus-camera Ph. 2083 PayPal Name Lynn@butkus.org www.PayPal.me/lynnbutkusView original page 4
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Moin fealurer (Differences berween 3 modets) II Tower 20 Lens: 8 elemenis H Zuiko-W , Fl2, f :35mm. with fixed focus mork. ,A
Tower 18 Lens: 7 elements GZuiko F11.8, f :42mm. With built-in self timer. t rower l0 Lens : 5 elements EZuiko F12.8, f :48mm.
Note : The figures of the lens opening ond the dislqnce scole ore different due to
the kind of the lens ond the focol length respectively. But the infrored ".
roy photogrophy scole (R scole) ore the some on the three models.
Focusing : combined view ond coupled ronge-finder by helicoid motion.
Finder: Golden Luminous frome f inder with porollox outomotic correction.
Mognificotion 0.6 x.
Film winding : Winding lever cocks the shutter, tronsports film, ond indicotes the ex-
posure count ot the some time. One 120 degree turn of the lever qdvonces
one full frome ; double-exposure prevention ; intentionol superimposition
feosible. Exposure counter returns to stort position when reqr cover is
opened.
Comero bock : Opens ond closes by woy of o hinge.
Light volue scole on bock cover
45mm in diometer, slip on type.View original page 7Page 8 · Read text
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Lens
H Zuiko W F12 f :35mm G Zuiko F11.8 f :42mm E Zuiko F12.8 f :48mm
Since 1919, the Olympus Zuiko lens hos been internotionolly occloimed for the excellence
of its high quolity.
The seven-element F/I.8 G Zuiko lens is the fostest lens in the between-lens shutter-
comero. The eight-etement Wide Angle F12 is the first ond only high quolity lens of such
speed to be used with o stondord smoll diometer shutter. The Olympus lechnicions ore
the first in the History of Optics tolmoke this dromotic ochievement.
Theifive-element F/2.8 mode of new gloss is the most odvonced in existence ond corrects
oll oberrotions.View original page 8Page 9 · Read text
Film Looding
l. The TOWER Comero occepts ony stondord 35mm cortridge or the Tower Mogozine
Type P.
2. Pull up sliding lock ot side of cqmero ond reor cover snops open.
3. Hold f ilm ond comero os illustroted in upper photo ond insert loose end of film into slot.
4. Pull up on rewind knob so cortridge fits into chomber. Push down on rewind knob,
gently ond with slight twist, until knob engoges cortridge.
5. Actuolly use rewind knob to toke up slock in film ond until sprockets cotch in sprocket
holes.
www.butkus.usView original page 9Page 10 · Read text
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6. Close ond lock reqr cover.
7. Exposure Counter : When cover is closed, counter shows "S" for stort. Use ropid wind
lever ond wind film cnd click shutter, then releose shutter. Do this twice, bringing
exposure counter to fi1. Then you're reody for shooiing.
During these 2 proctice winds, be sure rewind knob turns in onti-clockwise direction,
showing film proceeding right. Before shooting the roll, odiust the Light Volue Diol
on bock of comero for proper AS,A film speed.View original page 10Page 11 · Read text
Uslng Shutter Speed Dlol Lens Openlng
Select shutter speed wonted by rototing Click stops ore found ot the following f
numbers indicote the relotivediol os shown. Speeds ore I second, stops : (These
t t t t t t operture occording to this stondord formulo: l r, l r, I to, l rr, I ur, l roo,r f ,rrrr f uss ond f stop equols
Bulb. All speeds hove click siops for Focol Length of Lens
your convenience. When using Bulb, Diometer of Opening
the shutter remoins open <:s long os f i I I gives twice the light of tl16. f/8 gives
releose button is depressed. rwice the light of tl1l, etc.)View original page 11Page 12 · Read text
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Note rheiyellow numerols oppeoring[in the window belween the shutter speed diql on!
ihe f/stop diot. These ore colled LIGHT VALUE NUMBERS ond rcnge'.from 2 through l7
on this Tower 10.
Set the Shutter Speed Diol of Tower l0 on I second, ond the f/stop
diol on f 12.8.
Then the LIGHT VALUE WINDOW APPEARS "3". As the lens opening
is chonsed from 112.8 to f 122 rhe LIGHT VALUE NUMBERS CHANGE
ARITHMETICALLY FROM I ihrough 9. Now reset the diols to I second
or tf2.S,bringing the Light Votue window to "3" ogoin. This time
chonge the shutter speed only, up to l/500. The Light Volue
Number is chonged to 18.
This system is bosed on o LIGHT VALUE.NUMBER OF Olwhen SHUTTER
lS AT I SECOND-ond LENS IS:AT F/1. Since progressions qre orith-
metic, certoin Light Volue Numbers connot oppeor properly in the
window becouse 115 of o second is NOT hqlf of l/2 second, ond 1125 of q second is NOT
holf of l/10 second. THIS TOWER SYSTEM lS THE MOST ADVANCED LVS ovoiloble.View original page 12Page 13 · Read text
Slmpllclty of rhe Llghr Vqlue Toble
Let's ossume our exposure colculotions give us o Light Votue of Number 8. Any one of
' the following settings will give ihe film IDENTICAL exposure :
f116 ol I second
f/ll ot l/2 second
f/8 ot l/4 second (or l/5 second)
t15.6 or l/8 second (or l/10 second)
tl4 ot l/15 second (close to l/10 second)
.),ff2.9otl/30second(or1125second) . .. ' f/1.8 oI 1160 second (or l/50 second) :
Thesecombinotionsgivethefi|mthesqmeexposure.
Select the f/srop ond/or shulter speed colled for by your subiect lmotter. proper ex-
posure results when the LIGHT VALUE NUMBER lS THE SAME. :
tr. " ,T .,:View original page 13Page 14 · Read text
- www.butkus.usTOWER Lighr Voluf5ysrem is the finesr In ordinory comeros the shutter speed diol ond the f/stop diol turn ot the some time, ond ore so connected thot they connot move seporotely, Advonced photogrophers reolize however fhot "proper" exposure is relotive, ond depends on the photogropher's creotive desires. Only the TOWER ollows this to be done. The TOWER odvonced light volue system-ollows shutter diol ond f/stop diol to rotote independently of eoch other.View original page 14
Page 15 · Read text
How to the Use Light Volue Diol on ?he Cqmero Bock:
ouidoor evenl 3?reet scene
open londscope ouldoor scene
scene in rhodow
mountoin obiecf ot window
sunny weother
cloudy light cloucy
light volue ASA number
After setting the proper ASA film speed, turn the diol so it is
odiusted to the existent weother conditions.
This Number "14" is effective, however, only from 9 AM to 3 PM
during Morch, April, September ond October. lf shooting from
November through Februory, the proper Light Volue Number is
"f 3". For Moy, June ond August it becomes "15". These self-
explonotory odiustments give you the proper Light Volue Number
for oll normol purposes.
www.butkus.usView original page 15Page 16 · Read text
www.butkus.usHow to Use the TOWER tlghr Value Sysrem After determining the proper LV Number, decide which is more importont to you-shutter speed to stop ociion, or smoll lens diometer to goin greot depth of field. lf you wont to stop oction, set shutler ot l/500 ond move f/stop diol until Number l4 oppeors in LIGHT VALUE WINDOW. This will bring lens opening totl5.6. At 11250lens opening is f/8. lf more depth of field is desired, tl16 moy be set first ond then the shutter speed diol moved until LIGHT VALUE NUMBER l4 oppeors, which would be ot obout li50 second. lf, during shooting time, light on the subiect suddenly chonges (such os clouds hiding the sun) the shutter speed diol or the f/stop diol moy be immediotely moved to compensote for the chonge of light. Only the TOWER light volue system offers such versotility ond occurocy !View original page 16
Page 17 · Read text
Automotic Film Winding Sysfem
Film winder outomoticolly performs oll these functions with o single 120 degree stroke:
* Winds film to next exposure
* Counts exposure on counter
* Cocks shutter
* Prevents occidentol double exposure
After setting proper f/stop ond shutter speed, ond ofter lens if focussed, moke full 120
degree stroke of winder (ollowing hondle to spring bock to position), ond press shutter
releose button. lt is impossible to expose film until film is fully wound ond it is impossi-
ble tolwind film until film is exposed. This is true comero outomotion. Film winding lever
moy be left in 45 degree ongle for quick ond
eosy use. (See right holf of illustrotion)
To obtoin double or triple exposures for trick
shots, moke the f irst exposure, then press rewind
BUTTON AT BASE OF CAMERA while using film
winding lever. This cocks shutter BUT DOES
NOT WIND FILM.
Repeot operotion for multiple exposures on
some frome.View original page 17Page 18 · Read text
www.butkus.usThe TOWER Mogic Dor Window To Rewind Film :
After lost exposure, open rewind knob os
shown in illustrotion, press rewind button ot
bose of ccmero, ond slowly rewind film by
turning knob in o direction opposite thot of
the outomotic film winder will stop holfwoy
towords its full 120 degree position. DO
NOT FORCE THIS FILM WINDER. Simply pressWhen outomotic film winding on the rewind button of bose of comero,lever hos been properly ope- complete the 120 degree turn of the filmroted, q red dot oppeors. As winder, ollow it to snop bock to the 45 degreesoon os shutter is releosed, position, return it monuolly to its position flushdot becomes white. This gives with the comeroyou visuol proof of reodiness bock,ond perform
conditions. the rewind ope-
rotion os outlined
obove.View original page 18Page 19 · Read text
The Golden Bright-Frome Finder
The TOWER CAMERA embodies o new principile of ronge'
finder/viewfinder optics. Eosy sighting is now possible
with the TOWER oversized finder, eliminoting squinting
ond stroin on the photogropher's eye: A new Golden Frome
wiihin the viewer itself shows you exoctly whot will be
within the picture. Regordless of whot ongle your eye is
www.butkus.us ot, the Golden Frome is occurote.
FINDER ln oddition to these odvontoges, the TOWER
AUTOMATICALLY corrects for PARALLAX. Regordless of
the distonce being focussed on, ond regordless of the
position of your eye in relotion to the finder, the Golden
Frome shows you exoctly whot the film will receive'
ONLY TOWER POSSESSES THESE ADVANCED FEATURES
WITH SUCH ACCURACY !
Diogrom ot left shows how components "[" ond
@,, @l rrC" comprise the rongef inder, ond how com-
ponents "B" comprise the Golden Frome in the
Viewing Field.View original page 19Page 20 · Read text
Focuslng www.butkus.us
Focusing lever on lens borrel controls o helicoid motion principle. The combined view-
finder/rongefinder in the TOWER ollows you to focus ond compose ot the some time.
when the yellow imoge superimposes the normol imoge, focus is correct.
The mork -O- is the storting line for the distqnce between the
comero ond the obiect. Meosure the exoct distonce from this
storting line if it is necessory to get o correct distonce in cose of
toking the close up picture, within 3 ft.
R Mork (Compensoting scote for Infrored Film)
In cose of toking o picture by Infrored Film, first of oll
get the distonce by focusing view-finder, ond then put
this distonce scole on the R mork so th,ot the disfonce
will be compensoted.
!View original page 20Page 21 · Read text
w
Flosh Synchronlzotion
Flosh bulbs for o lens shutter ore clossified into two closses, closs
M ond Closs F. A closs M bulb reoches its moximum light output
obout 20 milliseconds ofter the electric current stqrts to flow.
The time-to-peok for o closs F butb is usuotly l0 milliseconds.
Ane|ectronicfloshorosfrobelighthosproctico|lynotimedeloy.ffi
To meet the demond for using ony kind of bulbs oformentioned, ;l* "'" MFX change lever
lhe shutter must hove some device to regulote the time to storl flow of electric turrent.
l. Using o closs M bulb ;
Set the synchro lever ot the mork M, ond the flosh synchronizes ot oll speeds. DO
NOT USE A CLASS F BULB OR A STROBE LIGHT AT THIS SETTING !
2. Using o Strobe light;
Set the synchro lever ot X, ond the electronic flosh synchronlzed ot oll speeds.
Wiih this setting,
A cfoss M bulbs con be used for o speed setting between 1-1125 second, ond o closs
F bulb between l-l/50 second.
When the synchro lever is set ot X, electric current storts to flow when the shutter is
fully open.
3. Using o closs F bulb ;
Set the synchro lever ot F. The shutter is fully open l0 milliseconds ofter the stort
of current flow.View original page 21Page 22 · Read text
f
How to use rhe Selftlmer Deprhwww.butkus.usof Fleld Advonroge lI
(Only for Tower l8)
h+\ Your comero olso tells you whot port of
I eoch picture will be in shorp focus. For
exomple, le? us set the distonce scole ring
of Tower l0 comero ot 15 feet ond sel
operture ot f/8. You will find thot your
1* operture setting f/8 is repeoted in white
After shutter hos been cocked, push figures to the left ond to the right of the
deloyed-oction timer to horizontol posi- lens borrel. These two f/8 white figures
tion pointing owoy from the lens borrel. ore in-line with 9 feet to infinity wifl be
of possibly shorp focus.+ Moveorrow. exposed(Arrow isbuttonimbeddedin directionin comero
body.) !n obout.l0 seconds shutter will
outomoticolly be releosed. (DO NOT
press regulor shutter releose button on
top of comero when using deloyed oction
timer. Timer con be seen moving releose
buiton when in use.)View original page 22From the M. Butkus archive. Original publisher and archive notices are retained.
Check the model and edition against your equipment.
PDF verified 2026-10-10.